fix temporary pages

src/graphics/ui/elements/Menu.hpp

@@ -8,6 +8,7 @@ namespace gui {
     struct Page {
         std::string name;
         std::shared_ptr<UINode> panel;
+        bool temporal = false;
     };
 
     using page_loader_func = std::function<std::shared_ptr<UINode>(const std::string& name)>;
@@ -31,14 +32,21 @@ namespace gui {
         /// @param history previous page will not be saved in history if false
         void setPage(const std::string &name, bool history=true);
         void setPage(Page page, bool history=true);
-        void addPage(const std::string& name, const std::shared_ptr<UINode>& panel);
+        void addPage(
+            const std::string& name,
+            const std::shared_ptr<UINode>& panel,
+            bool temporal = false
+        );
         void removePage(const std::string& name);
-        std::shared_ptr<UINode> fetchPage(const std::string& name);
+        Page fetchPage(const std::string& name);
 
         /// @brief Add page supplier used if page is not found
         /// @param name page name
         /// @param pageSupplier page supplier function
-        void addSupplier(const std::string& name, const supplier<std::shared_ptr<UINode>>& pageSupplier);
+        void addSupplier(
+            const std::string& name,
+            const supplier<std::shared_ptr<UINode>>& pageSupplier
+        );
 
         /// @brief Page loader is called if accessed page is not found 
         void setPageLoader(page_loader_func loader);